Book of Five Rings Relic

Is Book of Five Rings good in Slay the Spire 2?

Book of Five Rings is a common relic in Slay the Spire 2. While carried, it does the following: Every cards you add to your Deck, heal HP. It currently underperforms most relics, sitting at D tier in our Slay the Spire 2 relic rankings.

Across 1535 recorded runs, decks carrying it win 29.8% of the time, comfortably clear of the 13.8% average, by 15.9%. It’s a more situational relic, showing up in just 7.3% of runs. The class that gets the most out of it is the Regent, at a 37.5% win rate. Regent players hold onto it in 7.8% of their runs.

It combos especially well with Heirloom Hammer, worth a +48.0% win-rate swing together. Another strong card to run with it is Believe in You, worth +42.4% to its win rate. On average it’s acquired around floor 17 of a run. Its common rarity shapes how frequently you’ll run into it.

It has 454 run wins against 1070 losses in our tracked data. When runs carrying it end, the most frequent culprit is Kaiser Crab Boss, which closes out 5.6% of them. Read on for Book of Five Rings’s complete card, class, and threat breakdown before you decide to pick it up.

Pick or Skip: Book of Five Rings

Out of 2703 recorded offers Book of Five Rings is taken 58.3% of the time, and taking it is worth +4.0% in pick lift — 30.2% for runs that picked it against 26.2% for runs that skipped, across 1562 decided runs.

Taken 1575 times out of 2703 offers.

Pick rate when offered counts offers, not runs: out of every time the game put this in front of a player, how often it was taken. It is not the same number as the share of runs that end up containing it.

Pick lift is the sample-adjusted gap between runs that took the option and runs that passed on it. It is the fair way to rank choices, because raw win rates put the smallest samples on top.

Best Cards with Book of Five Rings

Ranked by win-rate lift, the best cards to run with Book of Five Rings are Heirloom Hammer (+48.0%), Believe in You (+42.4%), and Sneaky (+42.4%).

Heirloom Hammer+48.0%18 runsBelieve in You+42.4%18 runsSneaky+42.4%18 runsBundle of Joy+41.0%24 runsMonarch's Gaze+40.8%17 runsForegone Conclusion+39.0%16 runs

Based on small co-occurring samples — treat these as early signals, not final verdicts.

Book of Five Rings Win Rate by Class

Book of Five Rings shows up across 5 classes, led by Regent (37.5%), Silent (35.5%), and Necrobinder (27.9%) by win rate.

The Regent37.5%257 runsThe Silent35.5%361 runsThe Necrobinder27.9%236 runsThe Ironclad25.8%362 runsThe Defect21.0%308 runs

Book of Five Rings Details

Book of Five Rings is a common relic carried in 7.3% of runs and usually picked up around floor 17.

Every cards you add to your Deck, heal HP.

What Ends Runs with Book of Five Rings

Book of Five Rings’s most common run-enders are Kaiser Crab Boss (5.6%), Knowledge Demon Boss (5.3%), and Decimillipede Elite (4.9%).

• Kaiser Crab Boss5.6% of runs
• Knowledge Demon Boss5.3% of runs
• Decimillipede Elite4.9% of runs
• Test Subject Boss4.8% of runs
• Queen Boss4.6% of runs

See Also

Compare Book of Five Rings with the rest of the best Slay the Spire 2 relics, cards, and classes below.